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Top259en

Posted by: marcelorn19 on

I have one problem in my project.

 

My power supply when start with load the output is 25V and I remove the load and the voltage stay in 25V.

 

If I start the power supply with no load conected the power supply output is 38V and when I put the load stay in the 38V.

 

What is my problem?

 The Bias Waveform amplitude is 32V?

 

 

 

Comments

Submitted by VCastrellon on 10/02/2014

Could you please post your schematic?

Thank you 

Submitted by marcelorn19 on 10/03/2014

This is a current driver

Submitted by VCastrellon on 10/03/2014

I do not understand your circuit. Could you please explain me a little bit about the way it operates.  I am talking about the feedback circuit.  I see three sensing resistors, R6, R9 and R11. But I do not see how are you sensing the output current.

 

I see the inverting input of your op-amp. It is connected to a fixed voltage of 2.5 through the voltage divided made by   R1 and R12. The non-inverting input is connected to the return node. 

 

I am very confused.  Please explain me how it works

Thank you 

Submitted by alex eletronica on 01/28/2015

I have problem with the AC-DC converter using TOP260YN, the source does not turn to put load is removed the load it usually triggers.

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circuit used (425 KB) 425 KB
Submitted by PI-Terry on 02/04/2015

Hi,

Following the discussion that replied by Worf, are you saying there is a new issue? Would you please give a little bit more information that I can further support you?
I am sorry, I do not really understand "the source does not turn to put load is removed the load it usually triggers."